Retirement Benefits Plans (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
	Mar. 31, 2015	Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets		$ 700,000
Pension obligation		0
Defined benefit plan, recognized gain (loss) due to settlements		$ (12,600,000)
Other Segments
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	$ 4,000,000
Maximum
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangement with individual service period (in years)		10 years